Root rot of common bean in Zanjan, Iran: major pathogens and yield loss estimates

Naseri, Bita

doi:10.1071/ap08053

Cited by 45 publications

(40 citation statements)

References 7 publications

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“…According to previous studies, Fusarium oxysporum is among the most common root-invading pathogens for bean production in Zanjan, Iran (Naseri 2008). This fungal pathogen causing Fusarium wilt (also known as Fusarium yellows) is a destructive disease of beans and severe outbreaks have been reported in South America and Africa (Abawi & Pastor-Corrales 1990), and in Spain (Díaz-Mínguez et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Sowing, field size, and soil characteristics affect bean-Fusarium-wilt pathosystems

Naseri

2014

J Plant Dis Prot

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Fusarium wilt is an important disease threatening bean production in Zanjan, Iran. Interactions between agrosystem characteristics, bean-wilt, and soil are still poorly understood. In this study, effects of several cropping and soil characteristics on Fusarium wilt were analyzed in 48 bean growers' fields. Application of urea and herbicides, bean market class, preceding crop and sampling year had no significant effect on disease parameters (area under disease progress curve, average disease index over sampling period, disease index, and infection rate) in most cases. Fusarium-wilt-index at pod maturity stage of bean growth was selected for regression analysis as dependent variable. A statistical analysis based on principal components regression showed that soil pH, sowing depth, soil silt, sowing date, and field size explained 68% of variation in Fusarium wilt index observed in bean crops. Findings suggest postponing sowing beans at shallow depths in appropriate soil texture with neutral pH as potential strategies to manage Fusarium wilt.

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Section: Introductionmentioning

confidence: 99%

Sowing, field size, and soil characteristics affect bean-Fusarium-wilt pathosystems

Naseri

2014

J Plant Dis Prot

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“…The disease severity was rated using the 0-5 scale based on the percentage of root tissues with discolouration, red streaks, or rots (Naseri, 2008). For each quadrat, a root disease index was also calculated as follows: disease incidence × disease severity/ 5 (Naseri, 2008). The disease incidence was determined by measuring the proportion of plants affected by FRR.…”

Section: Epidemiological Surveysmentioning

confidence: 99%

“…The status of rhizobial nodulation on root system was assessed using a scale modified from that of Van Schoonhoven and Pastor-Corrales (1987): 0 = no nodulation, 1 = low to medium nodulation with 1-3 small (< 1 mm diameter) nodules, and 2 = high nodulation with more than four well-developed (> 1 mm diameter) nodules per rootlet. The disease severity was rated using the 0-5 scale based on the percentage of root tissues with discolouration, red streaks, or rots (Naseri, 2008). For each quadrat, a root disease index was also calculated as follows: disease incidence × disease severity/ 5 (Naseri, 2008).…”

Section: Epidemiological Surveysmentioning

confidence: 99%

“…Thus, the large-scale evaluation of various soil factors linked to FRR and yield could provide useful information, which may assist with the improvement of productivity through maximizing stress on FSP and minimizing stress on bean. Naseri (2008) reported remarkable differences in the disease incidence, severity, index, and yield loss to bean root rots among commercial fields of Zanjan. It was suggested that the use of 100-seed weight might be inappropriate for estimating yield loss from root rot diseases when bean varieties differ in seed size.…”

Section: Introductionmentioning

confidence: 99%

“…Fusarium root rot (FRR) disease, caused predominantly by F. solani f. sp. phaseoli (FSP), threatens bean production in Zanjan province, north-western Iran (Naseri, 2008). Favourable environmental conditions in particular soil properties have possibly caused FRR to become well established in the main bean growing region of the province in the last few years compared to the mid1990s when FRR rarely occurred in commercial fields (Naseri, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Bean production and fusarium root rot in diverse soil environments in Iran

Naseri¹

2014

J. Soil Sci. Plant Nutr.

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The associations of Fusarium root rot (FRR) and yield variables with a number of soil characteristics were determined at pod maturity in 122 commercial bean fields in Zanjan, Iran. Mean pod and seed numbers per plant at a sand content level of 45-65% were lower than those at a level of 25-45%. Higher FRR index and fewer pods were detected in field soils with 30-48% silt content compared to 15-30% level. FRR index was higher in field soils treated with fungicides compared to non-treated soils. The lowest FRR index and highest yields occurred in the soils with the highest level of organic matter, 1.2-1.8%. The greatest FRR index and lowest yield levels were observed in non-nodulated beans compared to low-and high-nodulated beans. Soil pH and organic matter were negatively correlated with FRR variables. According to loadings for second principal component, the most relevant soil characteristic to FRR was pH, followed by organic matter, clay and sand content. There were spatial FRR correlations among bean fields. Organic matter was the most effective factor among the soil properties surveyed to improve bean productivity. This new information extends our knowledge over interactions between FRR, yield and various soil variables in commercial bean fields.

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Preliminary evaluation of wild bean (Phaseolus spp.) germplasm for resistance to Fusarium cuneirostrum and Fusarium oxysporum

et al. 2021

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Fusarium root rot (Fusarium cuneirostrum) and Fusarium wilt (F. oxysporum) are major constraints on common bean (Phaseolus vulgaris L.) production worldwide as limited genetic resistance is available in current cultivars. Wild accessions have greater genetic diversity than cultivated germplasm and could provide novel sources of resistance for these diseases. We screened 248 wild bean accessions in a greenhouse setting for responses to both Fusarium root rot and Fusarium wilt and recorded disease severity; resistance was observed in 21 and 16 accessions, respectively. PI 417775 was the most resistant accession to Fusarium root rot, exhibiting very few symptoms whereas accessions PI661845 and PI535441 were the most resistant to Fusarium wilt. Only accessions MX-GT-1 and PI535445 were resistant to both Fusarium root rot and Fusarium wilt.

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Root rot of common bean in Zanjan, Iran: major pathogens and yield loss estimates

Cited by 45 publications

References 7 publications

Sowing, field size, and soil characteristics affect bean-Fusarium-wilt pathosystems

Sowing, field size, and soil characteristics affect bean-Fusarium-wilt pathosystems

Bean production and fusarium root rot in diverse soil environments in Iran

Preliminary evaluation of wild bean (Phaseolus spp.) germplasm for resistance to Fusarium cuneirostrum and Fusarium oxysporum

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